Amazon with B30
Amazon with B30
This is insane. What the hell have they fed to that B30, in the vid it tops out 11krpm meter..
http://www.youtube.com/watch?v=LkpyzLDA1J4
http://www.garaget.org/?car=74077
http://www.youtube.com/watch?v=LkpyzLDA1J4
http://www.garaget.org/?car=74077
Volvo R-Sport - Equipment for the car enthusiast.
“Buy land, they're not making it anymore” - Mark Twain
"There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games." -Ernest Hemingway
“Buy land, they're not making it anymore” - Mark Twain
"There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games." -Ernest Hemingway
I watched this earlier and it started bothering me how that engine can rev so high. And suddenly some kind explanation came to my head. Once my uncle told me about his carb-engined 2,8 liter Granada. Apparently it can rev to about 9000rpm (if i remember corretly) And he said also that same kind of car and same kind of engine with fuel-injection. Revs are limited to ~7000 rpm (again i might remember this incorrectly) I asked why there is such big difference between two fuelling and ignition systems. Answer was that in the carbed engines distributor there isn't rev limiter. And that engine will rev and rev until it doesn't get enough fuel or it breaks down.
So maybe here is same kind of situation
So maybe here is same kind of situation
1999 Volvo S80 T6 Quiet long distance cruiser.
1990 Volvo 360 GLi Waiting inspiration.
1989 Toyota Land Cruiser For days when wellies aren't enough inside the car.
1987 Volvo 360 GLi Being restored.
1986 Volvo 740 Turbo Sold, but not forgotten.
1990 Volvo 360 GLi Waiting inspiration.
1989 Toyota Land Cruiser For days when wellies aren't enough inside the car.
1987 Volvo 360 GLi Being restored.
1986 Volvo 740 Turbo Sold, but not forgotten.
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lol, that sentence was a bit interesting wasn't it.
To make an engine rev that high usually takes a LOT more work than just a high rev cam and some engine work, everything comes into play e.g. rod stretch and correct matched valve setups otherwise a piston would likely reach out and kiss a valve long before 11Krpm possibly even on a non-interference engine.
Still cool though!
To make an engine rev that high usually takes a LOT more work than just a high rev cam and some engine work, everything comes into play e.g. rod stretch and correct matched valve setups otherwise a piston would likely reach out and kiss a valve long before 11Krpm possibly even on a non-interference engine.
Still cool though!
'89 360 GLE awaiting 2.3 power
Revving is what kills a engine. I build a 1.6 Zetec for a rallypuma. Revvs till 9200 rpm. Almost everything has to be changed. I can't explain it in english very good. But it are the acceleration forces what damage everything.
Only when you start building a high revving engine yourself, you'll know what it takes to reach the 9000 rpm.
Only when you start building a high revving engine yourself, you'll know what it takes to reach the 9000 rpm.
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I'm not that keen on chopped amazons but I do like the 240 door handles.
The B30 is an odd choice but a nice one. It is the carbs that allow it to rev so high and also very stiff valve springs to stop valve bounce at high rpm.
With FI normaly engines are limited to about 6500-7000 rpm so the injectors do not max out. You can make a single injector work to higher revs but it needs to be very high flowing and capable of opening for very short times for idel.
Mazda use 3 injectors per cylinder on the rotary engine to allow it to rev over 10,000 rpm! 1 injector for upto about 3000 then a second for upto about 6000 and the 3rd also comes in for the top end.
The B30 is an odd choice but a nice one. It is the carbs that allow it to rev so high and also very stiff valve springs to stop valve bounce at high rpm.
With FI normaly engines are limited to about 6500-7000 rpm so the injectors do not max out. You can make a single injector work to higher revs but it needs to be very high flowing and capable of opening for very short times for idel.
Mazda use 3 injectors per cylinder on the rotary engine to allow it to rev over 10,000 rpm! 1 injector for upto about 3000 then a second for upto about 6000 and the 3rd also comes in for the top end.
Dai
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Please email me directly on dai@classicswede.co.uk
http://www.classicswede.com
phone/text 07824887160
Web shop http://www.classicswede.co.uk/
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I can't help but think that the head is going to be a major restriction once you're up at nearly 12krpm. The heads are often fundmentally reworked (i.e. ports doubled in size with extra metal grafted on, etc) even for operation in the 8krpm region. Still....Amazon + B30 = droooool
The engineering challenges associated with making an old boat engine hang together at double the original redline are not insignificant. Weight and strength of the internals become very significant. I know some builders of bike engines tend to go for lighter, rather than stronger, components (no H-beam rods, for example)...so I'd be interested to see what has gone into this beasty!
cheers
James
The engineering challenges associated with making an old boat engine hang together at double the original redline are not insignificant. Weight and strength of the internals become very significant. I know some builders of bike engines tend to go for lighter, rather than stronger, components (no H-beam rods, for example)...so I'd be interested to see what has gone into this beasty!
cheers
James
VOC 300-series Register Keeper
'89 740 Turbo Intercooler
'88 360 Turbo Intercooler
'85 360 GLT
'81 343 GLS R-Sport
'79 343 DL
'70 164
...and some modern FWD nonsense to get me to work...
'89 740 Turbo Intercooler
'88 360 Turbo Intercooler
'85 360 GLT
'81 343 GLS R-Sport
'79 343 DL
'70 164
...and some modern FWD nonsense to get me to work...
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The B30 bottom end is good for high revs with only balancing.
The top end is where the work is but even then you do not have to do a great deal to make it rev that high. The main thing is stiffer valve springs to stop valve bounce. Its not hard to make an engine do that but more care has to taken to keep it relighable.
Do not ever take a B30 to high revs when its cold - they do not like it.
The top end is where the work is but even then you do not have to do a great deal to make it rev that high. The main thing is stiffer valve springs to stop valve bounce. Its not hard to make an engine do that but more care has to taken to keep it relighable.
Do not ever take a B30 to high revs when its cold - they do not like it.
Dai
Please email me directly on dai@classicswede.co.uk
http://www.classicswede.com
phone/text 07824887160
Web shop http://www.classicswede.co.uk/
Please email me directly on dai@classicswede.co.uk
http://www.classicswede.com
phone/text 07824887160
Web shop http://www.classicswede.co.uk/